/*
 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
 * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice including the dates of first publication and
 * either this permission notice or a reference to
 * http://oss.sgi.com/projects/FreeB/
 * shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * Except as contained in this notice, the name of Silicon Graphics, Inc.
 * shall not be used in advertising or otherwise to promote the sale, use or
 * other dealings in this Software without prior written authorization from
 * Silicon Graphics, Inc.
 */
/*
 *
 * OpenGL ES 1.0 CM port of GLU by Mike Gorchak <mike@malva.ua>
*/

#ifndef _BEZIERPATCHMESH_H
#define _BEZIERPATCHMESH_H

#include "bezierPatch.h"

typedef struct bezierPatchMesh
{
   bezierPatch* bpatch;          /* vertex */
   bezierPatch* bpatch_normal;
   bezierPatch* bpatch_texcoord; /* s,t,r,q */
   bezierPatch* bpatch_color;    /* RGBA    */

   float*  UVarray;      /* all UV components of all vertices of all strips */
   int*    length_array; /* [i] is the number of vertices in the ith strip  */
   GLenum* type_array;   /* [i] is the type of the ith primitive            */

   /* to support dynamic insertion */
   int size_UVarray;
   int index_UVarray;
   int size_length_array;
   int index_length_array;

   int counter; /* track the current strip size */
   GLenum type; /* track the current type: 0: GL_TRIANGLES, 1: GL_TRIANGLE_STRIP */

   /* we eventually want to evaluate from (u,v) to (x,y,z) and draw them */
   float* vertex_array; /* each vertex contains three components */
   float* normal_array; /* each normal contains three components */
   float* color_array;
   float* texcoord_array;

   /*in case we need a linked list*/
   struct bezierPatchMesh* next;
} bezierPatchMesh;

#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

bezierPatchMesh* bezierPatchMeshMake(int maptype, float umin, float umax, int ustride, int uorder, float vmin, float vmax, int vstride, int vorder, float *ctlpoints,  int size_UVarray, int size_length_array);

/*initilize patches to be null*/
bezierPatchMesh* bezierPatchMeshMake2(int size_UVarray, int size_length_array);

void bezierPatchMeshPutPatch(bezierPatchMesh* bpm, int maptype, float umin, float umax, int ustride, int uorder, float vmin, float vmax, int vstride, int vorder, float* ctlpoints);
void bezierPatchMeshDelete(bezierPatchMesh* bpm);
void bezierPatchMeshBeginStrip(bezierPatchMesh* bpm, GLenum type);
void bezierPatchMeshEndStrip(bezierPatchMesh* bpm);
void bezierPatchMeshInsertUV(bezierPatchMesh* bpm, float u, float v);

bezierPatchMesh* bezierPatchMeshListInsert(bezierPatchMesh* list, bezierPatchMesh* bpm);

int bezierPatchMeshListTotalStrips(bezierPatchMesh* list);

int bezierPatchMeshListTotalVert(bezierPatchMesh* list);
int bezierPatchMeshNumTriangles(bezierPatchMesh* bpm);
int bezierPatchMeshListNumTriangles(bezierPatchMesh* list);

void bezierPatchMeshDelDeg(bezierPatchMesh* bpm);
void bezierPatchMeshEval(bezierPatchMesh* bpm);
void bezierPatchMeshListEval(bezierPatchMesh* list);
void bezierPatchMeshListCollect(bezierPatchMesh* list, float** vertex_array, float** normal_array, int** length_array, GLenum** type_array, int* num_strips);

void bezierPatchMeshListDelDeg(bezierPatchMesh* list);
void bezierPatchMeshListDelete(bezierPatchMesh* list);
bezierPatchMesh* bezierPatchMeshListReverse(bezierPatchMesh* list);

#ifdef __cplusplus
}
#endif /* __cplusplus */

#endif /* _BEZIERPATCHMESH_H */
